#include<stdio.h>
int main()
{
    int a,b,c,d;
    printf("Please enter a number:");
    scanf("%d",&a);
    b=a*a*a;
    printf("%d*%d*%d=%d=",a,a,a,b);
    for(d=0,c=0;c<a;c++){
        d+=a*a-a+1+c*2;
        printf(c?"+%d":"%d",a*a-a+1+c*2);
    }
    if(d==b)printf("Y\n");
    else printf("N\n");
}